Frequency spectrum efficiency optimization method for wireless energy-carrying communication system based on hybrid precoding

A technology for wireless energy-carrying communication and spectrum efficiency, which is applied in the field of spectrum efficiency optimization of wireless energy-carrying communication systems based on hybrid precoding, can solve problems such as spectrum scarcity and energy consumption, and achieve improved service range, high data rate, and reduced complexity. degree and energy consumption

Active Publication Date: 2021-08-10
SOUTH CHINA UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies of the prior art, in order to solve the problems of spectrum scarcity and energy consumption, improve the service distance range of SWIPT, maximize the system sp

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  • Frequency spectrum efficiency optimization method for wireless energy-carrying communication system based on hybrid precoding
  • Frequency spectrum efficiency optimization method for wireless energy-carrying communication system based on hybrid precoding
  • Frequency spectrum efficiency optimization method for wireless energy-carrying communication system based on hybrid precoding

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Embodiment

[0029] This embodiment provides a method for optimizing spectrum efficiency of a wireless portable communication system based on hybrid precoding, and the method includes the following steps:

[0030] Step 1, assuming that the wireless energy-carrying communication system deploys a BS equipped with Nt antennas and Mt base station radio frequency chains, K IRs (information receivers) equipped with Nr antennas, M equipped with Mr antennas ER (energy Receiver), where the IR obtains information from the signal transmitted by the BS, and the ER obtains energy from the signal transmitted by the BS. The millimeter-wave channel matrices from the base station to the k-th IR and m-th ER are denoted as H k and G m . Each RF chain of BS and IR is connected to all antennas through a phase shifter bank. The millimeter-wave channel matrix H consists of Nc radio frequency clusters, and each radio frequency cluster has Np transmission paths. The millimeter-wave channel matrix H can be expre...

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Abstract

The invention discloses a method for optimizing spectrum efficiency of a wireless energy-carrying communication system based on hybrid precoding. The method comprises the following steps: S1, obtaining an analog precoding matrix F from a base station BS in the wireless energy-carrying communication system through a step-by-step greedy selection algorithm; S2, enabling the base station BS to maximize the spectrum efficiency of the simultaneous wireless information and power transfer system through a soft interference elimination algorithm under the condition that constraint conditions are met, and obtaining a digital precoding matrix B; S3, transmitting information by the base station BS through the analog pre-coding matrix F and the digital pre-coding matrix B so as to maximize the spectrum efficiency of the simultaneous wireless information and energy transfer system. In the signal transmission process, the service range of the SWIPT can be expanded, certain energy is provided for an energy receiver, and a higher data rate can be provided for a user by using the millimeter wave Massive MIMO technology; and a hybrid precoding structure is adopted, so that the hardware complexity and energy consumption of the system are reduced.

Description

technical field [0001] The invention relates to the field of wireless transmission, in particular to a method for optimizing spectrum efficiency of a wireless portable energy communication system based on hybrid precoding. Background technique [0002] As the network grows, equipment access and service requirements are increasing, spectrum resources are becoming increasingly scarce, and the required energy consumption is also greatly increasing. Due to the short millimeter wave wavelength and small antenna size, a large number of antennas can be integrated in a limited space; and Massive Multi-Input Multi-Output (Massive MIMO) technology uses beamforming to provide high gain, which can compensate Millimeter wave has serious path loss; therefore, the combination of millimeter wave and Massive MIMO technology can greatly improve the spectral efficiency of the system and alleviate the problem of global spectrum resource scarcity. It is a key technology for next-generation commu...

Claims

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Application Information

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IPC IPC(8): H04B7/0456H04B7/0452
CPCH04B7/0456H04B7/0452H04B7/0465Y02D30/70
Inventor 唐杰戴土旺冯婉媚马若炎唐珩膑
Owner SOUTH CHINA UNIV OF TECH
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